12 12 12 Concert Live Stream: Watch Paul McCartney Join Dave Grohl For A Nirvana Reunion At The Concert For Sandy Relief

It’s been confirmed the Sir Paul McCartney will join Dave Grohl and Krist Novoselic for a Nirvana reunion at tonights “12-12-12: Concert for Sandy Relief.” McCartney will front the reunion by replacing late singer Kurt Cobain and even help the original members debut a new song.

The reunion will be in spectacular company at Madison Square Garden where the star-filled charity concert is also set to feature top artists like Bruce Springsteen, Alicia Keys, The Rolling Stones and Jon Bon Jovi and many more!

Set to go off at 7:30 p.m., the concert will be available to an estimated 2 billion people as 34 television networks prepare to broadcast the show.

The 12-12-12 concert will also be available via live stream on near nearly 30 websites, including YouTube, MTV.com, Hulu and Myspace. Several movie theaters in New York, New Jersey and Connecticut will screen the concert as well.

The musicians are coming together for the 12-12-12 concert for Sandy relief, which benefits the Robin Hood Foundation. Concert producer John Sykes told Reuters the concert has already raised $32 million through ticket sales and sponsorships.

He said the concert features "the greatest lineup of legends ever assembled on a stage."

The show, which will open with Bruce Springsteen and the E Street Band at 7:30 p.m., is expected to last until Paul McCartney closes at around midnight.

Viewers who wish to donate to the Robin Hood Relief fund can do so by calling in during the show, may even end up taking to a celebrity volunteer.

“Beginning at 7:30 p.m. sharp at the start of the live concert, a phone bank will be on-site at Madison Square Garden where musical artists and celebrity participants will take donations via phone over the course of the evening,” Clear Channel media said in statement. “Viewers from around the world will have the opportunity to call-in to help donate to the Robin Hood Relief Fund.”

In addition to the tradition donation via phone, patrons can also support the Sandy Relief Fund by utilizing social media.

Location-based social network Foursquare is offering a single-day badge -- the Be Robin Hood badge -- which you can unlock by checking in anywhere in the world with the hashtag #121212concert. The first 25,000 checkins will trigger $10 donations from Samsung Galaxy, up to $250,000. It's the first time Foursquare has allowed badges to be unlocked solely by using a hashtag once (badges are usually tied to real-world actions or specific locations) and its the geo-location network's largest donation campaign tied to an event.

Facebook is also be offering new charitable Facebook Gifts, which you can give to 12-12-12 and the Robin Hood Relief Fund. Several of the performers, including Martin, Joel, Springsteen and Vedder, will stream the concert from their own Facebook pages.

In addition, there will be curated feeds of tweets with the hashtag #121212concert on display at Madison Square Garden during the performance, powered by Twubs.

"It's a really unique group of people working on this and leveraging social to make an impact," Harish Bhandari, Robin Hood digital media manager, told Mashable.

Every dollar made from ticket sales will go directly toward Sandy relief, due to the generosity of the sponsors, organizers and Robin Hood's board of directors. Robin Hood will distribute the funds to different community non-profits in New York, New Jersey and Connecticut. The anti-poverty non-profit, with the help of McKinsey analysts, have determined how to best use the funds raised to reach those most in need following the devastating storm.